General

Engineer's Note

The M393B2G70QH0-YH9Q8 is a DDR3-1333 registered ECC RDIMM ideally suited for mid‑generation server platforms running virtualization, in‑memory databases, or enterprise storage workloads where data integrity is critical. Its dual‑rank x4 organization with CL9 latency provides balanced capacity and bank‑level interleaving while the registered signal buffering ensures stable operation across fully populated 240‑pin memory channels.

Technical Specs & Insights

1. Ample module capacity enables dense server virtualization, letting data centers run more active VMs per host without hitting memory limits.
2. ECC error correction safeguards data integrity in mission-critical applications, preventing silent memory corruption that could crash financial or database services.
3. Registered buffering stabilizes high-capacity memory configurations, crucial for maintaining signal integrity across fully populated multi-slot servers.
4. Low 1.35V operation reduces power consumption and cooling overhead in server farms, directly lowering operational expenses over thousands of nodes.
5. Dual Rank x4 architecture feeds interleaved data bursts to the memory controller, maximizing bandwidth for memory-intensive analytics and virtualized workloads.

Why These Specs Matter

The M393B2G70QH0-YH9Q8 is a server‑grade DDR3 Registered DIMM engineered for enterprise environments, and its four defining characteristics directly solve the pain points of data centers running virtualized clusters and in‑memory databases. ECC protection continuously corrects single‑bit errors, preventing silent data corruption that could silently crash a transaction‑heavy Redis or SAP HANA instance and compromise business integrity. The registered signal buffer stabilizes address and command lines, allowing you to populate multiple DIMMs per channel without signal degradation — a hard requirement for dense virtualization hosts that must support dozens of VMs simultaneously. The dual‑rank x4 architecture uses rank interleaving to boost effective memory bandwidth, which measurably reduces latency during live VM migrations or large dataset queries, keeping response times predictable under load. Finally, the 1.35V low‑voltage operation significantly curbs power draw and thermal output in 24/7 racks, lowering your total cost of ownership while maintaining the 1333MHz reliability that core workloads demand. Together, these features mean fewer unexplained outages, higher consolidation ratios, and consistently accurate data when every transaction counts.

Endurance & Reliability

Server Memory Identification
The module M393B2G70QH0-YH9Q8 is a 16GB DDR3-1333 Registered ECC DIMM (RDIMM) with 1.35V low‑voltage operation, clearly intended for server and enterprise platforms. The following capacity planning guidance targets three common server workloads.

General Virtualization
Maximize RAM density by populating all memory channels with identical 16GB modules. A dual‑socket system using 12 or 24 such RDIMMs delivers 192–384 GB, comfortably supporting dense VM consolidation. Balanced interleaving across channels ensures consistent performance under mixed‑load hypervisor environments.

In‑Memory Database
Reliability and capacity are paramount. Fill every DIMM slot to achieve 512 GB or more per node, keeping entire datasets in DRAM for low‑latency transactions. The Registered ECC corrects single‑bit errors, safeguarding data integrity, and maintaining uniform dual‑rank x4 configurations prevents signal degradation in fully‑loaded memory buses.

High‑Performance Computing
Optimize bandwidth by installing one DIMM per memory channel, sustaining the full 1333 MT/s rate. In a dual‑socket server with sixteen channels, use sixteen 16GB RDIMMs for a 256 GB configuration that balances capacity and aggregate throughput. This setup suits simulation and modeling tasks that stream large datasets through compute‑bound cores.

Verified Compatibility

Rigorously tested server memory, compatible with Dell PowerEdge R720/R620, HP DL380p Gen8, Lenovo System x3650 M4.

FAQ